HiCommand Dynamic Link Manager (HDLM) for Windows Systems User's Guide (HIT5201-96001, January 2008)

HiCommand
®
Dynamic Link Manager (HDLM) for Windows
®
Systems User’s Guide 383
Glossary
automatic failback Functionality for checking the status of paths
at regular intervals and automatically
placing the status of a path recovered from
an error into Online status. If a path with
Offline(E) or Online(E) status recovers from
an error, automatic failback places the path
Online. Automatic failback checks the status
of paths that were placed in Offline(E) or
Online(E) status because of an error, but
does not check the status of paths that were
placed in Offline(C) status by executing the
offline operation.
AutoPATH_ID An ID that HDLM assigns to a path at system
startup. Every path has a unique
AutoPATH_ID.
boot disk environment An environment in which the startup disk is
in a storage system instead of in the host.
CHA (channel adapter) An adapter for controlling a storage system
channel.
CLPR(cache logical partition) A function, supported by the TagmaStore
USP and Universal Storage Platform V, for
logically splitting a cache. This function
splits the cache by array groups in the
storage system, so that other array groups do
not affect cache performance.
cluster A system that connects multiple hosts having
the same operating system or platform (that
is, an environment in which the same
application can run) and treats them as one
system.
dev A logical division of an LU that HDLM controls
and operates. A dev is equivalent to a
partition in Windows. In a Windows, each LU
has only one dev, and each dev has a dev
number.
dev number A dev number (DNum column) in the
configuration list in HDLM. 0 is displayed.
This number indicates the entire LU. HDLM
operates assuming that one LU has one dev,
so the dev number is fixed to 0.